A microcontroller board based on the ATmega2560 or 1280 chip. Use this tag for questions specifically regarding the Mega, and not just general Arduino usage.
0
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1answer
10 views
Can you use both 3.3v and 5v
Can you use an Arduino EtherMega's 3.3v and 5v pins with two sensors, one requiring 3.3v and the other 5v and a sketch that combines both?
0
votes
1answer
11 views
NEO 6M GPS SPEED
I am doing a project using NEO 6M GPS with my arduino lilypad.
I programmed it already, and it's working well except of the speed. I get stuck on fixing this, I wonder why the value is never getting ...
0
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0answers
6 views
NEO GPS 6M connecting to Lilypad Arduino
I'm working on a project that has something to do with receiving gps data from the satellites. With this, I've used GPS NEO 6M with an arduino Lilypad for wearable purposes.
I've already tried using ...
0
votes
0answers
11 views
Arduino Mega2560, Ethernet Shield & OV0706: “Camera not found”
I want to make a picture with the OV0706 that saves the picture to the SD card. I'm using the Arduino Mega2560, Ethernet Shield (with SD slot) and the OV0706 (this one: ...
4
votes
2answers
46 views
a mega 2650 power supply mystery
Something happened to my mega2650 as I was experimenting the other day. It no longer turned on when powering from the 2.1mm jack or from Vin, regardless of the voltage applied. A plastic bubble had ...
1
vote
1answer
20 views
Looking for a Mega 2650 drawing or picture that shows the components labeled
I am Looking for a Mega 2650 drawing or picture that shows the components labeled.
I've seen the schematics but didn't find a labeled assembly drawing yet. Should this exist?
Thanks
1
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0answers
25 views
MCP4725 not working
I tried using a MCP4725 DAC with an Arduino (M0 Pro, Duemilanove and Diecimila) and it is not outputing any voltage (just random noise).
I've been using the 2 tutorial codes fount here : ...
0
votes
0answers
43 views
How to control relay using SIM800 and Arduino Mega through SMS?
For my project I need to control relays through SMS and now I can send SMS from my SIM800 module which is connected to Arduino Mega R3. But I tried several shapes for AT commands to receive SMS and ...
0
votes
1answer
18 views
How do we connect 2 FSR sensors to an Arduino Mega?
One can connect an FSR sensor (a force-sensitive resistor) to an Arduino via 5V, Gnd, and A0 port (as below, according to an adafruit.com page), but how will it work for two of them instead of one?
...
1
vote
0answers
19 views
Using a SPI based ADC (ADE7912) with Arduino
I'm trying to use Analog Devices' isolated adc ADE7912 to build a native product for voltage and current sensing, using arduino as a microcontroller. The IC communicates with arduino using SPI (and ...
0
votes
1answer
41 views
How to perform a data transfer to an external server
So I'm doing a project that involves getting sensor data from several sensors, and then sending them to an external server when a tragic occurs. But I've been having trouble figuring out how to send ...
1
vote
1answer
50 views
Can someone explain me the parameters on Arduino callbacks?
I'm reading a code that uses Arduino as a webclient and when he tries to catch the info from the site, he uses a callback with the following parameters:
static void response_callback (byte status, ...
0
votes
1answer
22 views
Why does enabling TIMSK1 mess up serial?
I am intending to write a code where a user will send lines through serial to affect timer interrupts. I am noticing a problem with serial where as soon as I enable the timer interrupts, the serial ...
0
votes
1answer
34 views
Using two ultrasonic sensors for counting cars when they enter to a garage
I want to use two ultrasonic sensors for counting incoming cars to a garage. What I want is: When both sensors detect the object then the counter should increase.
Can anyone help me and give me an ...
0
votes
1answer
63 views
Motors settings
I'm trying to build my own 3D printer with a guide but I've got a problem with two of my CD/DVD motors : I don't know which settings to set in Marlin (Configuration.h) because I can't find any ...
-1
votes
1answer
17 views
Sparkfun Si4703 FM not getting to loop
I recently purcahsed an si4703, from sparkfun
https://www.sparkfun.com/products/11083
I got it soldered to some headers and now I am not getting anything to work on it, my wire diagram is as follows
...
0
votes
0answers
35 views
What is MEGA16U2 and why it's burning hot on Mega
I have an Arduino Mega board that's driving a GPS module (operating at 1Hz) and a few shift registers, nothing out of the ordinary as far as I can tell. But this "MEGA16U2" chip is burning like lava ...
0
votes
1answer
32 views
Atmel studio 7 - my own libraries
I like to use AS7 to make my programs.
I know c and some c++, but how things work from there I'm green.
I would like to know if there is a folder where I can store my own homemade c and h library ...
0
votes
2answers
45 views
I2C Master-Slave Arduino system to control array of steppers
trying to make a system where one master Arduino makes moving 9 steppers 28BYJ-48 by 3 stepper on each slave arduino.
While all the parts on their way to me, wonder to check with professionals.
...
0
votes
1answer
27 views
Running Steppers with servo
I'm doing a project which is automatic box carrier. It will hold a box from a location and move it next to it. Kind of cnc work. Locations are fixed it just has to run the orders. I want to send an ...
0
votes
0answers
31 views
Migrated - SNMP Get lag on Arduino Mega 2560 - hardware limitations or poor code?
I posted this question in the main Stack Overflow page 2 days ago, but found out this sub only later and decided I might be missing people who know the answer but visit mainly this page, that's why I ...
0
votes
1answer
26 views
Compare the new sample in a high sampling rate datalogger
I am using sdFat library the analog bin logger example,
Github: SdFat/SdFat/examples/AnalogBinLogger/
The program is working fine and every thing but the thing is, this high speed datalogger uses ...
0
votes
0answers
44 views
Gathering data from compass module (gy-271) with Arduino
I am trying to do a project using a Arduino mega 2560 and the compass module GY-271 (hmc5883L chip) , I've already imported the libraries (Adafruit_HMC5883_U.h, wire.h ,...) and i tried to use the ...
0
votes
0answers
23 views
Indoor object locating/position sensor with Arduino/Esp8266
I am looking for a sensor that would locate where the board is, in the room.It doesn't have to be real time,but when the board is moved to a different position ,it should be able to project the ...
1
vote
0answers
13 views
How to select proper camera [closed]
I need help on how to select camera for transmitting video through Wi-Fi or RF module to my laptop.
How to select proper camera?
How to select adequate Wi-Fi or RF module for it?
I will be using ...
0
votes
3answers
129 views
Programming Arduino in Pascal?
My question is simple: there is any Pascal or Pascal-class (FPC, Delphi, mikroPascal) programming language for Arduino?
Preferably (I hope I don't ask too much) that language should not be older ...
0
votes
4answers
83 views
I am planning to do a periodic table with Arduino's help but I have a few questions
I'm doing that for my school project, but I have few questions before I purchase the components.
First of all, let me explain how it will work:
There will be 4x20 LCD, an Arduino and probably two ...
0
votes
1answer
73 views
I need help purchasing components for my Arduino project
I am a newbie on this hardware stuff. I need help on purchasing the components
Brief description of my project
I need a device that would remotely detect weight or pressure when somebody push on it ...
0
votes
0answers
16 views
Arduino Porting Problem
I want to build an Arduino weather station, and the code that I wrote worked perfectly on my Arduino Mega 2560 with an Atmega2560, but when I porthed it over to my Arduino/Genuino Micro, the hardware ...
0
votes
2answers
37 views
Machine installed with arduino suddenly turns on when usb is unplugged
Why is my machine suddenly turns ON when I unplugged the USB on my computer? Does it have connection on the auto reset feature of my arduino board?
String input = "";
void setup(){
...
0
votes
2answers
68 views
Arduino Mega with nRF24L01+ module
I am having trouble getting this module to work using the tmrh20 lib. I am using these modules with two arduino mega and a 3.3V external power supply. I also placed 10 uF in parallel with the modules ...
1
vote
1answer
40 views
Shield board with holes, do I need to solder?
I have a motor shield.
I can put it on top of my arduino Mega and works perfect.
However, since the shield plugs in on top of the arduino board, I don't have access to 5V and GND from Arduino Mega.
...
0
votes
1answer
26 views
Aurduino Mega prototype board connectors
Might someone shed some light on the 52 pin connectors on the end of the prototype board? Both boards have no 52 pin female connectors, the board that doesn't include the breadboard wire has a male ...
1
vote
0answers
42 views
Is my Arduino mega dead?
I accidentally short-circuited my Arduino mega(ended up connecting the 5V and ground pins). Physically from observation nothing seems to be burnt on the board but I am not able to upload new codes to ...
1
vote
1answer
103 views
Sim800L HTTP post request stop working after a while
I am desperate to get my SIM800L module (http://www.ebay.co.uk/itm/SIM800L-GPRS-GSM-Module-Board-Quadband-QUAD-BAND-Antenna-for-MCU-Arduino-/321992759287) sending POST requests for a long period of ...
0
votes
0answers
43 views
Unable to recieve UDP data using arduino mega 2560 with enc28j60
I am newbie with Arduino and I am using Arduino mega 2560. I am trying to send and receive UDP data using enc28j60 Ethernet sheild. For this i download library and sample code from here. Now I load ...
2
votes
2answers
42 views
Arduino PWM Pins Interrupt
I am creating pwm from an arduino pin with 50% duty cycle. I just want to know how can i detect its every falling edge using timer interrupt? I don't want to connect that PWM pin to an external ...
1
vote
1answer
18 views
Sensor/servo shield for Arduino Mega
Is there Arduino shields with blocks of 4 pins that you can plug your servos into and use the fourth pin as signal pin to the Arduino Mega board?
1
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2answers
80 views
How to write array of functions in arduino library?
I've nine functions each of type void as follow:
void zero();
void one();
void two();
void three();
void four();
void five();
void six();
void seven();
void eight();
void nine();
I've put all these ...
0
votes
1answer
26 views
Can I use the TLC5940 LED Driver if I'm already using other SPI devices on my Arduino mega?
The way I understand SPI is that 3 wires are shared (MOSI, MISO, & SCHK). The slave select is pulled high when you want to write to a specific device. The 3 shared wires can be daisy chained. The ...
0
votes
4answers
385 views
Will enabling parity bit actually decrease corruption?
I have an Arduino Mega communicating with a Bluetooth adapter through one of the auxiliary hardware serial ports. It works, but there appears to be a corruption rate of approximately 1 in 200 small ...
3
votes
2answers
72 views
If a Timer is used, disabling some PWM pins, can I still use those pins for Digital write?
It's my understanding that when a Timer is used on an Arduino (in my case the Arduino Mega), it can disable analog write on some PWM pins, which pins depends on the Timer being used. For instance on ...
1
vote
1answer
41 views
Connecting Winbond W49F002U-12B to Arduino Mega
I am trying to connect a CMOS flash memory Winbond W49F002U-12B to an Arduino Mega, but failing.
What I did:
Read the Winbond W49F002U-12B datasheet. The key points are: CE - chip enabled; OE - ...
0
votes
1answer
37 views
Store TinyGPS++ latitude value into a variable of type string or float
I want to get the GPS ordinates in degrees with 6 decimal accuracy. I can obtain this by creating a gps object with TinyGPS library. but In the TinyGPS example codes, its written
...
-1
votes
1answer
34 views
High Torque motor humming but not turning [closed]
I am making a self-balancing robot and using a 30 kgcm and 200 rpm 12 V DC motor. When I am applying PWM to the enable pin the motor is humming not rotating. Please help I dont why it is happening.
...
1
vote
1answer
16 views
Driver shield providing 24+ pins at 100mA (for Mega 2560)
Do any shields (or similar boards) exist to let the Mega 2560 (or Due) output a full 100mA per pin on at least 24 pins, in a digital on/off fashion? I know there is a motor shield, but it looks to ...
4
votes
1answer
119 views
SPI with a level converter in the other end of connection
I have an Arduino MEGA hooked up with a NRF24L01, and working nicely, talking with another Arduino Uno. It works as described, power supply to 3.3V, and SPI lines (MISO,MOSI,CLK) connected directly to ...
1
vote
1answer
50 views
Don't know how to work IMU and NRF24 together
I'm having problem on how can I use IMU and NRF24 together.
This is the code that i'm trying to use,
/*
Copyright (C) 2012 James Coliz, Jr. <[email protected]>
This program is free ...
0
votes
1answer
68 views
Why doesn't my object's method return back to my caller method?
I am creating a miniature computer using an Arduino, and I am creating a full-scale interpreter for it. Everything works, and the code begins to run after calling the runCode method, but once the run ...
1
vote
0answers
42 views
Is it possible to run the Teensy to the Arduino?
I'm already done copying/pasting the libraries that I know is needed to run the program, but I wonder why I always get this error every time I tried to run the code. What do you think would be the ...
